基于滑模观测器的感应电机矢量控制技术研究

摘要

In order to speed fast and accurate of the induction motor,a kind of induction motor vector control technology based on sliding mode observer is researched.In the static two-phase motor reference coordinate system,the motor model is reorganized.According to the characteristics of the motor model,it design a sliding mode observer.By using Lyapunov stability theorem,it proved the stability of observer.Based on current observer and the concept of equivalent control,it estimate the rotor flux and speed.Matlab Simulink simulation results show that the vector control technology based on a sliding mode observer for speed and load torque uncertainties can exhibit good speed performance,good robustness.%为了对感应电机进行快速精确的调速,研究了一种基于滑模观测器的感应电机矢量控制技术.基于电机的静止两相参考坐标系,重新整理了电机模型.根据电机模型的特点,设计了滑模电流观测器.利用李亚普诺夫稳定定理,证明了观测器的稳定性.在电流观测器的基础上,根据等价控制的概念,估算了转子磁链和转速.Matlab Simulink仿真结果表明,基于滑模观测器的矢量控制技术对于转速和负载转矩的不确定性均能呈现很好的调速性能、鲁棒性好.